USA Today reports that the average expenditure on Valentine's Day was expected to be $100.89. Do male and female consumers differ in the amounts theyspend? The average expenditure in a sample survey of 46 male consumers was $130.6, and the average expenditure in a sample survey of 31 femaleconsumers was $66.39. Based on past surveys, the standard deviation for male consumers is assumed to be $33, and the standard deviation for femaleconsumers is assumed to be $20. The z value is 2.576.Round your answers to 2 decimal places.a. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females?b. At 99% confidence, what is the margin of error?C. Develop a 99% confidence interval for the difference between the two population means.to

Given: n1=46x¯1=130.6σ1=33n2=31x¯2=66.39σ2=20 CI = 99%=0.99

Answered: USA Today reports that the average…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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USA Today reports that the average expenditure on Valentine's Day was expected to be $100.89. Do male and female consumers differ in the amounts they spend? The average expenditure in a sample survey of 54 male consumers was $132.57, and the average expenditure in a sample survey of 35 female consumers was $70. Based on past surveys, the standard deviation for male consumers is assumed to be $33, and the standard deviation for female consumers is assumed to be $16. The z value is 2.576. Round your answers to 2 decimal places. a. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females? b. At 99% confidence, what is the margin of error? c. Develop a 99% confidence interval for the difference between the two population means. to
USA Today reports that the average expenditure on Valentine's Day was expected to be $100.89. Do male and female consumers differ in the amounts they spend? The average expenditure in a sample survey of 50 male consumers was $135.46, and the average expenditure in a sample survey of 33 female consumers was $65.49. Based on past surveys, the standard deviation for male consumers is assumed to be $35, and the standard deviation for female consumers is assumed to be $18. The z value is 2.576. Round your answers to 2 decimal places. a. What is the point estimate of the difference between the population mean expenditure for males and the population mean expenditure for females? b. At 99% confidence, what is the margin of error? c. Develop a 99% confidence interval for the difference between the two population means. to
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